A kind of asymmetric support method of rock burst roadway

Abstract

The invention discloses an asymmetric support method for rockburst roadway. ; Support the top, arch waist, and side of the roadway located in the coal seam through the anchor cable and the inner steel mesh; among them, the anchor cable is encrypted at the position located in the direction of the roadway and the main force. Lengthen and / or re-strike to form asymmetrical support for the roadway; through real-time monitoring of the working resistance of the anchor cables at the top, arch waist, side and / or bottom of the roadway, reinforcement support or unloading is adopted. pressure measures to ensure the support quality of the surrounding rock of the roadway, and then complete the asymmetric support of the roadway. The support method provided by the invention only strengthens the support in the direction of the main force along the normal direction of the coal seam, thereby improving the support efficiency and effect.

Description

technical field [0001] The invention relates to the technical field of coal mine safety, in particular to an asymmetric support method for rock burst roadways. Background technique [0002] With the gradual increase of the depth of coal mining in my country, the number of deep mines has increased year by year, and the frequency and intensity of rock bursts have also increased year by year. The study found that the occurrence of rock burst went through three stages in sequence: "shock initiation→shock energy transfer→rock burst appearance", in which strong support can reduce the degree of catastrophe in the stage of rock burst appearance. From the case of rock burst, it can be seen that the appearance of rock burst is often directional, and this direction is the direction of the main force. However, the current support of rock burst roadway still has insufficient consideration of the magnitude and direction of the main force, which makes the pertinence of rock burst roadway ...

AI Technical Summary

Problems solved by technology

However, the current support of rock burst roadway still has insufficient consideration of the magnitude and direction of the main force, which makes the pertinence of rock burst roadway support not strong, and reduces the support efficiency and effect

[0003] To sum up, there is currently no roadway support method for rock burst that can consider the magnitude and direction of the main force, integrate strong support and strong yielding performance, and is convenient for construction, strong in applicability, and low in cost.

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